2 years ago

Ways of showing obedience to teachers

1 answer:

6 0

Answer:

Use good manners, give your full attention to your teacher when they are teaching and talking to you, do not talk back if you get in trouble, get to class on time, follow all classroom rules and guidelines

Explanation:

just be a decent human being lol

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Which office had President Clinton held prior to becoming president?

Ilya [14]

The correct answer is d. <span>governor of Arkansas.

He was the governor of Arkansas until December 12th 1992 and he became the president on January 20th of the following year. </span>

7 0

2 years ago

A survey asked 26 adults how many years of education they had. The sample mean was 13.03 with a standard deviation of 3.22. It i

yulyashka [42]

Answer: (11.95, 14.11)

Explanation:

Let x be a random variable that represent the number of years of education.

Given: Sample size : n= 26

Sample mean : $\overline{x}=13.03$

Sample standard deviation : s = 3.22

Significance level : $\alpha=100\%-90\%=10\%=0.1$

Degree of freedom: df = n-1 = 25

Critical t-value for $\alpha=0.1$ and df = 25 will be

$t_{\alpha/2, df}=t_{0.05,25}=1.7081$

90% confidence interval for mean:

$\overline{x}\pm t_{\alpha/2,df}\dfrac{s}{\sqrt{n}}\\\\=13.03\pm (1.7081)\dfrac{3.22}{\sqrt{26}}\\\\=13.03\pm (1.7081)\dfrac{3.22}{5.09902}\\\\=13.03\pm 1.08\\\\=(13.03-1.08,\ 13.03+1.08)\\\\ =(11.95,\ 14.11)$